[clang] [llvm] [AMDGPU][clang][CodeGen][opt] Add late-resolved feature identifying predicates (PR #134016)

[Alex Voicu via llvm-commits]

AlexVlx wrote:

@erichkeane @AaronBallman if, when you have time, you could please indicate if the new direction is at least generally aligned with what you had in mind, it'd be appreciated!

https://github.com/llvm/llvm-project/pull/134016